I have an HDS-8 gen 2, LSS-2, and LGC-4000 combo I purchased in the spring of last year. When I put the boat away for the winter (Minnesota) everything was working well. Boat stored indoors in a heated garage (65 degree min.). When I put the boat back in service this summer I first updated my firmware in the HDS-8 to the new version 2.0-45.135. I finished last year on version 1.1.39.43. I didn't change anything else except re-mount the HDS-8 and put some dielectric grease in the cable connectors on the back. So far this year, my HDS-8's sonar and structure scan screens have been cluttered by a great deal of noise that wasn't there last year. See screen shots below.
I've tried everything I can think of to get back to were I was. Here's a list of what I've tried:
- Reset fishing mode.
- Downgraded firmware to version 1.1.39.44
- Re-upgraded to firmware version 2.0-45.135
- Turned off main motor (Merc Verado 150) at key. Then drift with trolling motor circuit off at its main circuit breaker. No difference.
- Tilt main motor up out of water.
- Change sensitivity/colorline settings. I can make the noise go away if I lower the sensitivity enough, but the fish arches disappear too.
- Apply some soap to both transducer bottoms before launching.
- Turn everything non-Lowrance off.
Can anyone think of anything that I might have missed?
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